denison



. 2 Sheets-Sheet 1. S.` P. DENISON. COPYING TELEGRAPHIG APPARATUS.

(No Model.)

Patented June 6, 1893.

` NVENTOH BY r a ATTORNEY.

(No Model.) 2 Sheets-Sheet 2.

S. P. DENISON.

' COPYING TELBGRAPHIG APPARATUS.

No. 498,911. Patented June 6, 1893.

W/TNESSES: /NI/ENTO? UNITED STATES PATENT OFFICE.

SYLVESTER P. DENISON, OF BELLEVILLE, NEW JERSEY, ASSIGNOR TO HERMAN BROESEL, TRUSTEE, OF NEV YORK, N. Y.

COPYING TELEGRAPHIC APPARATUS.A

SPECIFICATION forming part of Letters Patent No. 498,911, dated J' une 6, 1893.

Application filed February l, 1893. Serial No. 460,612. (No model.)

To @ZZ whom t may concern:

Be it known that I, SYLVESTEE P. DnivisoN,

a citizen of the United States, residing at Belleville, in the county of Essex and State sible form; second, to devise a simple and efficient transmitting arm and circuit connections adapted for use with .this improved transmitting fillet; third, the construction of adjustable devices for use in connection with the circuit controlling portion of the trans mitter which shall be more delicate of adj ustment and of a more practical nature than are the corresponding parts described and shown in the prior patent; fourth, the construction of an improved receiving stylus which will vibrate over the receiving fillet with as little frictionas possible and avoid as far as may be, unnecessary abrasion or tearing of the moistened lillet. These several Objects are accomplished by the improved mechanism hereinafter described. Y

In the invention disclosed in my priorfpatent it was necessary to prepare the transmitting fillet either by the use of a non-conducting ink on a conducting fillet or strip, or a conducting ink upon a non-conducting iillet, the 'circuit of the transmitting generator being either interruptedpor made by such conducting or non-conducting ink over the transmitting line according to the nature of the fillet or transmitting blank used. Such a form of fillet is open to the objection of imperfection in its conducting or non-conducting qualities, and to the further objection of unnecessary care required in its preparation, such as would not naturally be taken by persons ordinarily preparing their messages. In order to overcome this objection I have devised the improved form of transmitting iillet which is prepared by simply indenting or markingthe message, character, sketch, or other information it is desired to transmit into a fillet of yielding non-conducting material by the agency of a pointed stylus of steel, hard wood or the like material and causing the indentations thus prepared to automatically close the circuit through a conducting vibrating key carried by the vibrating arm of the transmitter, the impulses thus transmitted to the receiving station being received through the improved form of receiving stylus as Will be hereinafter more fully described.

In order that my invention may be fully understood by those skilled in the art to which it relates, reference is had to the accompanying drawings, in Which- Figure 1 is a side elevational view of my Vimproved form of autographio transmitter showing the transmitting fillet in position. Fig. 2 is a plan view thereof and as seen looking at Fig. l from'the top toward the bottom of the drawing, the box which contains the impelling mechanism for the fillet being shown as broken away. Fig. 3 is a sectional view taken through Fig. 2 on line .fr-oc and as seen looking from the left hand toward the right hand side of the drawing. Fig. 4 is a detail side elevational, part sectional view, of my iinproved transmitting needle or stylus and circuit and other connections therefor, a portion of the transmitting fillet being shown in position under the vibrating needle or stylus. Fig. 5 is a side elevational, part sectional view, of my improvement in the adj ustable` contacting devices which regulate the connection of the transmitting battery and avoid the production of tailings on the receiving stylus. Fig. 6 is a side elevational view of the vibrating receiving arm with the receiving stylus in position resting upon the receiving fillet. Figf/ is a plan view of the same parts, the receiving llet not being in position. Fig. 8 is a vertical sectional view taken through the receiving stylus and its sustaining case or holder. Fig. 9 is a perspective view of theimproved receiving stylus, and Fig. 10 is-a diagrammatic view illustrating a transmitting instrument at one station, a receiving instru- ICC) ment at a distant station, and the circuit connections, generators, controlling electro-magnets and transmitting and receiving fillets in position showing also a message in the act of being transmitted and received.

Referring now to the drawings in detail: D represents the box of the transmitting instrument which incloses clock controlled mechanism (not shown) for feeding the transmitting fillet F forward through the agency of a feeding roller R and tension roller r.

M represents a permanent magnet one pole of which is secured to some portion of the box D as shown, the other pole thereof being in connection with the rear poles of the electro- I magnets C C.

a is a vibrating armature permanently magnetized by the free pole of the magnet M and lying in the magnetic field of the free ends vor poles `of the magnets C C.

A is a transmitting arm carried by the shaft which supports the armature a, and d d are adjustable springs connected to adj usting screws for regulating the throw of the lever A.

All of the parts so far described are disclosed in my prior patent, there being by preference a transmitter and a receiver at each station, the vibrating receiving arm A (see Fig. 10) at the receiving station .being controlled by a polarized electro-magnet like that shown in Fig. l.

L (see Fig. 10) is the transmitting or elecf trolytic line over which the message is transmitted, and L is -the main or synchronizing line over which currents of alternating polarity vare transmit-ted by a pole changer' P C and battery B or preferably by any well known equivalent form of alternating current electric generator,

F is the transmitting fillet which consists preferably of paper or other pliable or yielding non-conducting material adapted to receive the message which is written upon it with a pointed stylus in the same manner as one would write a message with a lead pencil, the writer simply pressing upon the paper with the stylus with sufficient force to clearly indent the message to be transmitted in the upper face of the fillet as shown bythe word Telegraph on the transmitting fillet F in Fig. l0.l The receiving fillet is prepared by moi'stening a strip of paper similar fo the transmitting fillet with any of the usual well known materials which readily decompose under the action of an electrical current. This receiving fillet F rests on the upper surface of a conducting plate N and is drawn forward by a feed roller controlled by clock mechanism as is the transmitting fillet F (see Fig. 1

Refnring now to Figs. 3, 4, and 5,1 will describe my improved form of transmitting styluswhich is carried by the vibrating arm A of the transmitter T.

To the end of the arm A is attached by screws s s4 a short metallic bar Gr in the outer end of which is located a vertically disposed shoe g having a vertical opening throughout its length in which is situated a sliding needle or stylus j pointed at its lower end and provided with a rounded head at its upper end. Upon the upper end of the rounded head rests a yielding spring k which is attached by screws s s2 to an adjusting block T carried also by the arm A. Near the outer end of this yielding conducting spring k is a contact point e adapted to contact with a corresponding contact point e carried by a yielding conducting spring d secured to the metallic bar G by a screw s3. Through the free end of this contact spring 0l extends a screw e2 into the metallic bar G. The several screws, s, s", s2 and e2 are for the pur pose of manipulating the adjustment of the parts described. The lower end of the needle or stylus j is of such a nature that as the arm A vibrates and carries with it the shoe g, the needle or stylus will fall into the depressions in the indented message strip or fillet F while the shoe g will ride easily back and forth over the surface thereof, as will be more clearly pointed .out in connection with the description of the mode of operation. As the arm A of the transmitter vibrates back and forth it carries with it a contacting point p which alternately strikes against the adjustable conducting contact screw 0 and nonconducting contact 0 carried by a vertically disposed lever F, the lower end of which is pivoted to thevbox D by a pivot extending into the plate f and its lateral surface rests against a yielding disk @c of cloth,felt orother equivalent material.

p8 is a spiral spring and n an adjusting nut, the joint function of which is to regulate the adjustment of the friction between the pivoted portion of the arm F2 and the disk f. With such a device and through the agency of the adjustable screw o I am enabled to almost entirelyan nihilate the tailings sent over the transmitting line from the batteryBand to therefore effect a clear and Well defined message upon the receiving fillet.

My improved form of receiving stylus which is illustrated in Figs. 8 and 9 consists of a conducting wire S of hardened steel a-nd is surrounded with a coating of paraffine, wax, or other equivalent material. I prefer to make the .conducting portion of this stylus of the hardest steel, as I find that with such a stylus the record is but little blurred While with an iron or soft steel stylus it is appreciably blurred. I am unable to account for this difference but such is actually the fact. The stylus S is placed in a casing or holder K which is provided with an expansible adjustable spring t adapted to force it forward as it is worn away. The conducting portion of the stylus S is allowed to rest squarely upon the receiving fillet F and the waxed or cylindrical portion Will have a slidingbearing thereon, thereby acting simultaneously as IIO abrasure or rupture of the surface of the moistened iillet paper.

The operation of the apparatus is as follows: The message having been indented as before indicated upon the fillet F by a stylus, said fillet and the receiving fillet having been placed in position, shown in Fig. l0, the pole changer P C is set in motion, thereby causing rapid reversals of current from the battery B to be transmitted over the main line L through the polarized magnets C C at the transmitter T and receiver R. The transmitting arm A will therefore vibrate in unison with the ref ceiving arm A. As the stylus or needle j and shoe g carried by the metallic block G and arm A are vibrated back and forth and as the fillet F is fed forward under the movement of the fillet feeding roller R (see Fig. l) the stylus or needle j will fall into the depressions each time it passes over any portion of the indented record while the shoe g will ride smoothly back and forth and act as a guide for the nee dle, as will be clearly understood on examination of Fig. 4. When this needle or stylus j falls into such depressions therefore, the contact points e e` will be united. At the Same time as thevibrating arm A is being carried, say from right to left looking at Fig. 10, the contact point p will be in contact with thefadjustable contact screw 0 carried bythe pivoted lever F2. Consequently an impulse is sent from battery B in the direction of the arrow through the arm F2, contact screw o, conductor w', yielding conducting spring CZ (see Fig. 4t), contact points eA e, yielding conducting spring 7c, electrolytic line L to the receiver R, thence through the stylus S', chemically prepared llet F', conducting plate N, conductor 102 to earth at e. When the arm A of the transmitter reaches its extreme limit and starts back, thel circuit is interrupted between the contact screw o and the contact point p c'arried by the arm. On the return stroke of the arm A the contact p comes into mechanical contact with the insulating point o. and the circuit isinterrupted during this entire portion of the stroke, thus allowing the receiving stylus to make a record during one-half of its complete stroke only. I find that for the purpose of obtaining a clear and well defined record the best results are obtained by allowing the transmitting battery to be thus connected through the transmitting line to the receiving stylus during one half only of the complete movements of the vibrating arms A and A and that tailings and other unnecessary blurrings of the record are completely avoided by this arrangement of parts.

Itis obvious that any kind of message which can be transmitted, indented or embossed on themessage llet F may be transmitted over the line and received upon the receiving fillet F; In this way I may transmit sketches, maps, or any type of pictures or information which may be thus placed upon the surface of the fillet.

I do not limit myself to the special form of iillet herein described and shown as it is obvious that the message might be embossed or raised by writing it upon the rear side of thev` fillet and using the raised portions to make the circuit between the contact points under theiniiuence of the vibrating key orstylus.

I am aware that a transmitting fillet has heretofore been devised of non-conducting material, as paper, with a message indented in its surface, and I make no claims hereinafter to such a fillet other than as claimed in combination with my improved transmitting apparatus hereinbefore described.

Having thus described my invention, what I claim, and desire to secure by Letters Patent of the United States, is t l. In an autographic or copying telegraph a transmitting stylus or needle carried by an arm controlled in its movement by electromagnetic means and having motion in a lateral direction, said needle or stylus being located in a vertically disposed shoe and adapted to move simultaneously in a vertical direction substantially as described.

2. In an autographicorcopying telegrapha message blank having the message indented in one face thereof, in combination with a sliding stylus or needle carried by a vibrating arm controlled by electro-magnetic means, said stylus having motion also in a vertical direction and operatively connected with a circuit making and breaking device and to a transmitting battery the circuit making and breaking device being also carried by the vibrating arm, substantially as described.

3. In an autographic or copying telegraph a vibrating transmitting arm carrying a sliding stylus operatively connected with a circuit interrupter also carried by the transmitting arm, in combination with a second circuit interrupter adapted to close the circuit of the transmitting battery during one portion only of its complete vibratory movement substantially as described.

4. A receiving stylus for autographic or copying telegraphs made of conducting material surrounded by a coating of wax or paraffine substantially as described.

5. A receiving stylus for autographic or copying telegraphs consisting of a metal core surrounded by a cylinder of parafiine or wax substantially as described.V

6. A receiving stylus for autographic or copying telegraphs consisting of a metal core surrounded by wax or paraffine and inclosed in a case or holder substantially as described.

7. A receiving stylus for autographic or copyingtelegraphs consisting of a metal core surrounded by wax or paraffine and inclosed in a holder or case and provided with means for forcing it forward as it wears away substantially as described.

S. In an autographic or copying telegraph a message fillet or strip having the message indented or depressed in one of its faces; a vibrating transmitting arm carrying a sliding IOO IIO

shoe and a transmitting stylus having slidtion with a stylus or needle having sliding ing movement through the shoe and operamovement through the shoe and a circuit tively connected with a circuit breaker carbreaker having operative connections with 15 ried by the same arm, the arrangementbeing the sliding needle substantially as described. such that the slidingr shoe carries the stylus In testimony whereof I have hereunto subover the face of the message and allows it to scribed my name this 28th day of January, drop into and rise out of the inden'tations in 1893.

the record surface substantially as described.

9. A transmitter foran autographc or copy- SYLVESTER P' DENISON rc ing telegraph having a vibrating arm pro- Witnesses:

vided with a sliding shoe adapted to ride over EDWD. C. REGA, the surface of the message fillet, in combina- LEONARD PAULSN, Jr. 

